Naruto: Twenty Years in Hiding, Unrivaled from the Start

The Second Shinobi World War rages as undercurrents stir in Konoha. Hatake Xuanzhe, the White Fang's younger brother and a genius who came up alongside the Legendary Sannin, has deliberately lain low for twenty years, posing as an ordinary Genin, to evade the Third Hokage and Danzo's covert suppression. After awakening a dimensional evolution System, he drives his swordsmanship, ninjutsu, and Body Flicker Technique through successive leaps of evolution across dimensions. He exposes the higher-ups' plot to discard a tool once its usefulness is over, saves his brother Sakumo from the brink of collapse, and crushes Konoha's various factions. Rising from a farmer on the outskirts to an unrivaled supreme figure of the shinobi world, he becomes someone no one dares provoke.